The photo shows a person pumping gasoline into a car

Which TWO of these energy transformations will occur when the car’s engine starts?

A. Chemical energy —> thermal energy

B. Chemical energy —> mechanical energy

C. Mechanical energy —> Chemical energy

D. Thermal energy —> chemical energy

_____________________
Choose TWO

Answer:

9.80 kg

Explanation:

F = ma

96 N = m(9.8 m/s^2)

m = 9.80 kg

The mass of the ball will be m= 9.8 kg

It states that the force is equal to the rate of change of momentum . For a constant mass , force is equal to mass times acceleration

given :

Force due to gravity = 96 N

g = acceleration due to gravity = 9.8 m /s^2

using Newton's second law of motion

Since , F = ma

          96 = m g

          m = 96/9.8

          m= 9.8 kg

The mass of the ball will be m= 9.8 kg

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Answer:What is the acceleration of a car that moves from rest to 15.0 m/s in 10.0 s? Vi=0, vf= 15.0 m/s,t=10.0s, a=? a= vf =vi/tA=15.0m/s-0m/s/10.0s = 15.0s/10.0s m/s*1/s =1.50 m/s^2 11.

Explanation:

Answer:

spring force = -K × x , where X is elongation or compression in the spring. ( -) sigh shows that the spring force is opposite to the applied force to cause extension.

Potential energy = work done by spring force = integration of Force.

integrate the force (-K × x) over distance 0 to x .

U = 1/2 K × X^2 ( for elongation)

U = -1/2 × K × X^2 ( for compression)

Answer:

49kmph

Explanation:

speed=distance/time = 245/5

The three ways in which wildfires can ravage the land include the following below::

This is referred to as bush fire and is usually unplanned and uncontrolled fire in an area which has combustible vegetation. This is common in areas with very low relative humidity and destroys habitats of organisms when it occurs.

The causes of wildfires include arson and burning of debris by individuals which could escalate to a more serious one.

This is very dangerous as it could lead to the loss of lives and properties if not properly managed.

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Answer:

Health Insurance Portability and Accountability Act and Family Educational Rights and Privacy Act

HIPAA means Health Insurance Portability and Accountability Act

FERPA means Family Educational Rights and Privacy Act

Welcome :)

The student should arrange the motion detectors in a way that allows them to measure the velocity of both carts before and after the collision.

The student could place one detector at the start of the collision and one at the end of the collision. This would allow them to measure the velocity of each cart before and after the collision. The mass of each cart can be measured using the mass balance.

With this information, the student can calculate the momentum of each cart before and after the collision and verify that the total momentum of the system is conserved.

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The rocket engine that fires against the direction a spacecraft is headed so the spacecraft slows down is called Retro engine.

Spacecraft are the space automobiles that might be capable of flying out of doors of the Earth’s ecosystem in the area. They offer us a method of transportation from the Earth to the area and objects in it. There may be numerous spacecraft that are familiar to most of people e.g. Apollo 11 which took Neil Armstrong and his group to the Moon.

Crewed Spacecraft – Crewed spacecraft are the ones that carry people to the area. There have been several crewed spacecraft to the area consisting of Vostok 1 – the first crewed spacecraft in records dispatched by way of the United States of America.

Earth-Orbit Satellites – all of the satellites, which orbit across the Earth, fall in this class. The maximum tremendous satellite in orbit on the Earth is Hubble Telescope.

Space Probe – these are unmanned spacecraft that might be fitted with medical instruments for exploring objects in space e.g. planets, Moon, and solar.

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Answer:

2.481 mm

Explanation:

Given that

Distance between the slits, d = 0.275 mm = 2.75*10^-4 m

Wavelength of the lamp, λ = 546.1 nm

Distance between slit and the screen, L = 1.25 m

To solve this question, we would be applying the formula for Young's double slit fringes, from the path difference equal to a whole number of wavelengths.

mλ = dy/L

The question states that we should find the distance from the centre to the 1st order bright fringe, thus, m = 1

Now, we apply all these values into the question

1 * 546.1*10^-9 = (2.75*10^-4 * y) / 1.25

1.25 * 1 * 546.1*10^-9 = 2.75*10^-4 * y

6.825*10^-7 = 2.75*10^-4 * y

y = 6.825*10^-7 / 2.75*10^-4

y = 0.002481 m or 2.481 mm

1)Baby bird cannot fly. Their mother has to feed \bf\underline{them}them

2. Vijay likes riding my bicycle. I sometimes lend \bf\underline{it}it to \bf\underline{him}him

3. Sooraj and I are brothers. \bf\underline{we\:both}weboth share the same bedroom.

4. Ravina isn't well. Dad is taking to the doctor. (No personal pronouns required)

Answer:

  44.9 m

Explanation:

For ballistic motion in x-y coordinates, an appropriate equation can be ...

  y(x) = -4.9(x·sec(α)/v)² +tan(α)x + h0

where α is the angle of launch from the horizontal, and v is the magnitude of the launch velocity.

Here, we have v = 15 m/s, and α = 0, so the equation reduces to ...

  y = -4.9/225x^2 +44

For y = 0, we can find x to be ...

  x^2 = (44×225/4.9) ≈ 2020.41

  x ≈ 44.949

The stone hits the ground about 44.9 meters from the base of the cliff.

To make it over the next hill, the sledder needs an initial speed of approximately 9.39 m/s.

To determine the initial speed (\(v_i\)) required for the sledder to just make it over the next hill, we can apply the principle of conservation of mechanical energy.

The mechanical energy of the system is conserved as the sledder moves from the top of the hill to the bottom of the valley. At the top of the hill, the sledder has gravitational potential energy, and at the bottom of the valley, the sledder has both gravitational potential energy and kinetic energy.

At the top of the hill (point 1), the gravitational potential energy is converted into kinetic energy at the bottom of the valley (point 2). Therefore, we can equate the initial potential energy at point 1 to the sum of potential energy and kinetic energy at point 2.

At point 1:

Potential energy = mgh₁

At point 2:

Potential energy + Kinetic energy = mgh₂ + (1/2)mv²

Since the hill is frictionless, there is no loss of energy due to friction.

Setting the initial potential energy equal to the sum of potential and kinetic energy at the bottom of the valley, we have:

mgh₁ = mgh₂ + (1/2)mv²

The mass of the sledder cancels out, and we can rearrange the equation to solve for the initial speed vi:

v² = 2gh₁ + 2gh₂

v = √(2gh₁ + 2gh₂)

Substituting the given values:

v = √(2 * 9.8 m/s² * 4.5 m + 2 * 9.8 m/s² * 5.6 m)

Calculating:

v ≈ √(88.2)

v ≈ 9.39 m/s

Therefore, the sledder needs an initial speed of approximately 9.39 m/s to just make it over the next hill.

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Complete question :

The sledder shown in (Figure 1) starts from the top of a frictionless hill and slides down into the valley. Suppose that h1 = 4.5 m and h2 = 5.6 m .

What initial speed vi does the sledder need to just make it over the next hill?

The limiting reactant is the material that is in the shortest supply and will run out first, thus limiting the production of the bicycle. To determine the limiting reactant, we need to calculate how many bicycles we can make with each material:

a. With 5 frames, we can make a maximum of 5 bicycles.
b. With 10 seats, we can make a maximum of 10 bicycles.
c. With 16 wheels, we can make a maximum of 8 bicycles (since each bicycle requires 2 wheels).
d. With 20 pedals, we can make a maximum of 10 bicycles (since each bicycle requires 2 pedals).

Therefore, the limiting reactant is c. 16 wheels, as we can only make a maximum of 8 bicycles with this amount of wheels, even though we have enough of all the other materials to make 10 bicycles.

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The theoretical efficiency is greater than that of the actual efficiency of the engine. This is because heat engine always produces some waste heat.

The Second Law of Thermodynamics states that a heat engine cannot be 100% efficient. In practice, a heat engine is only 100% efficient when it is operating at about 30-50% efficiency.

If we were to multiply this by 100, we would get the efficiency as a percent: 49%. This is the theoretical maximum efficiency. If we were to actually build an engine, it would be less efficient than the theoretical engine. The theoretical engine that can achieve this theoretical maximum efficiency is called the Carnot Engine.

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Answer:

We multiply \(x = 23.78\times 10^{-6}\,\frac{m^{3}}{mol}\) by the amount of mole to change units to cubic meters.

Explanation:

Let \(x = 23.78\times 10^{-6}\,\frac{m^{3}}{mol}\), we change the unit to cubic meters by multiplying this number by the amount of moles of the sample. For instance, let \(n = 1\,mol\), then the obtain the following result:

\(m = x\cdot n\) (1)

\(m = \left(23.78\times 10^{-6}\,\frac{m^{3}}{mol} \right)\cdot (1\,mol)\)

\(m = 23.78\times 10^{-6}\,m^{3}\)

Answer:

YOP

Explanation:

Caught that boy lacking aint no capping had to stand on business

The coefficient of kinetic friction between the box and the floor is 0.11.

Coefficient of friction is a measure of the amount of friction existing between two surfaces.

The coefficient of kinetic friction between the box and the floor is calculated as follows;

F - Ff = ma

where;

F - μmg = ma

at a constant velocity, acceleration, a = 0

F - μmg = 0

F = μmg

μ = F/mg

μ = (52) / (50 x 9.8)

μ = 0.11

Thus, the coefficient of kinetic friction between the box and the floor is 0.11.

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Answer:

The  force is  \(F = 3587.2 \ N\)

Explanation:

From the question we are told that

   The  diameter is  \(d = 1.4 \ mm = 0.0014 \ m\)

    The pressure is  \(P = 2.33*10^{9} \ N/m^2\)

Generally the radius is mathematically represented as

        \(r = \frac{0.0014}{2}\)

        \(r = 0.0007 \ m\)

 The  cross-sectional area of the nail is mathematically represented as

       \(A = \pi r^2\)

=>     \(A = 3.142 * 0.0007 ^2\)

=>    \(A = 1.54 *10^{-6}\)

Generally the pressure is mathematically represented as

        \(P = \frac{F}{A}\)

=>      \(F = P * A\)

=>       \(F = 1.54*10^{-6} * 2.33*10^{9}\)

=>      \(F = 3587.2 \ N\)

Answer:

x = ~0.1289 m/s^2

Explanation:

We can use one of the kinematic formulas. We see that the equation doesn’t contain the final velocity, so we use the kinematic equation d = v_0t + (1/2)at^2.

Since the train started from rest, the initial velocity, v_0, is 0. Thus, the equation becomes:

d = (1/2)at^2

Note that 5 minutes is 300 seconds and 5.8 km is 5800 m. Substituting the values we are given, we get:

5800 m = (1/2)(x m/s^2)(300 s)^2 = (45000 s^2)(x m/s^2)

Dividing by 45,000 on both sides, we get:

x = ~0.1289 m/s^2

I hope this helps! :)

The assembly and disassembly of IFs are regulated by a variety of factors, including phosphorylation, subunit availability, pH, and ionic strength.

Intermediate filaments (IFs) are components of the cytoskeleton that control a variety of biological processes. IFs are typically less dynamic than microtubules and actin filaments, and they appear to be more stable. The assembly and disassembly of intermediate filaments are regulated by phosphorylation-dephosphorylation mechanisms.

The assembly and disassembly of intermediate filaments are controlled by a variety of factors. One of the primary determinants of IF dynamics is phosphorylation. Phosphorylation of specific residues on the IF proteins affects both the ability of the protein to form filaments and its stability once it has formed a filament.

In some cases, the presence of free subunits can promote filament formation, while in others, the formation of complexes between subunits can inhibit filament assembly. Changes in pH or ionic strength can also affect the assembly and disassembly of IFs.Intermediate filaments (IFs) are cytoskeletal structures that are typically more stable than microtubules or actin filaments.

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Answer:

D

Explanation:

To represent objects, processes, and systems that are too large, too small, or too complex to study directly

The correct option is (d) To represent objects, processes, and systems that are too large, too small, or too complex to study directly.

The 4 types of scientific models -

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Answer:

Explanation:

To find the distance covered we use the formula

From the question

velocity = 7 m/s

time = 23 s

We have

distance = 7 × 23

We have the final answer as

Hope this helps you

Answer:

atoms is basic unit of matter, neutral because of the equal numbers to + and - particle charges.

ions is a charged molecule formed by the loss or gain of electrons.

Hope this helps

Answer:

Momento = 170.8 Kgm/s

Explanation:

Dados los siguientes datos;

Masa = 3,05 kg

Velocidad = 56 m/s

Para encontrar el impulso;

El momento se puede definir como la multiplicación (producto) de la masa que posee un objeto y su velocidad. El momento se considera una cantidad vectorial porque tiene magnitud y dirección.

Matemáticamente, el momento viene dado por la fórmula;

\( Momento = masa * velocidad \)

Sustituyendo en la fórmula, tenemos;

\( Momento = 3.05 * 56 \)

Momento = 170.8 Kgm/s

Answer:I think it’s convection

Explanation:

Answer:

I guess rinse it out and wipe it up. It's not a hazardous substance so there's nothing to worry about.

These substances should be cleaned up rinsing the area or removing the compounds with a cloth and dispose of it in the trash.

Sugar is a chemical compound also called sucrose. Its chemical formula is C12H22O11. This compound is normally used to sweeten foods.

On the other hand, common salt is a chemical compound. Its chemical formula is NaCl. This compound is normally used to give food a salty taste.

According to the above, in which a student spilled some salt and sugar in the sink and does not know how to clean it, it can be concluded that the proper way to clean these chemical compounds is by rinsing the area or removing the compounds with a cloth and dispose of it in the trash because neither of them represents biological, chemical or physical risks and a specialized treatment is not required for them.

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Accurate radiometric dating is possible only if a rock contains a measurable amount of a radioactive isotope.

Radiometric dating is a method used to determine the age of rocks and other geological materials based on the decay of radioactive isotopes. Radioactive isotopes are unstable forms of elements that undergo radioactive decay, meaning they spontaneously break down over time and transform into stable isotopes or other elements.

The process of radiometric dating relies on the fact that radioactive isotopes decay at a known rate called the half-life. The half-life is the time it takes for half of the parent radioactive isotope to decay into the daughter isotope. By measuring the ratio of parent to daughter isotopes in a rock sample and knowing the half-life of the radioactive isotope, scientists can calculate the age of the rock.

To perform radiometric dating, it is crucial that the rock contains a measurable amount of the radioactive isotope. If the rock does not have any detectable amount of the radioactive isotope, it becomes challenging or impossible to accurately determine its age using radiometric dating methods.

The presence of a measurable amount of the radioactive isotope allows scientists to measure the ratio of parent to daughter isotopes and calculate the elapsed time since the rock formed or underwent a specific event, such as a volcanic eruption or the deposition of sediment.

The accuracy of radiometric dating depends on several factors, including the precision of the measurement techniques and the assumptions made about the initial concentrations of parent and daughter isotopes. Additionally, different isotopes have different half-lives, making them suitable for dating materials of different ages. Commonly used isotopes for radiometric dating include uranium-238, potassium-40, carbon-14, and many others.

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The disk's angular speed after 1 s is 42.37 rad/s.

The torque exerted on the disk by the 2 N force is given by:

τ = F * r

Where F is the force, and r is the radius of the disk.

Substituting the given values, we get:

τ = 2 N * 0.5 m = 1 N·m

The torque causes an angular acceleration of the disk,

which is given by:

α = τ / I

Where I is the moment of inertia of the disk.

For a solid disk rotating around its center,

the moment of inertia is given by:

I = (1/2) * m * r^2

Where m is the mass of the disk and r is its radius.

Substituting the given values,

we get:

I = (1/2) * (π * 0.5^2 * 1.2 kg/m^3) * 0.5^2

= 0.0236 kg·m^2

Substituting the torque and moment of inertia,

we get:

α = τ / I = 1 N·m / 0.0236 kg·m^2

= 42.37 rad/s^2

The initial angular speed of the disk is zero,

so its final angular speed after 1 s of rotation is given by:

ω = α * t = 42.37 rad/s^2 * 1 s

= 42.37 rad/s

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